XpsResource.GetStream Method
Definition
Important
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When overridden in a derived class, returns the I/O stream for reading or writing the resource.
public:
virtual System::IO::Stream ^ GetStream();
public virtual System.IO.Stream GetStream ();
abstract member GetStream : unit -> System.IO.Stream
override this.GetStream : unit -> System.IO.Stream
Public Overridable Function GetStream () As Stream
Returns
The Stream for reading or writing the resource.
Examples
The following example shows how to use this method (in a derived class) to add resources to an XpsDocument.
// -------------------------- AddPageResources ----------------------------
Dictionary<System::String^,List<XpsResource^>^>^ AddPageResources (IXpsFixedPageWriter^ fixedPageWriter)
{
// Collection of all resources for this page.
// Key: "XpsImage", "XpsFont"
// Value: List of XpsImage or XpsFont
Dictionary<System::String^,List<XpsResource^>^>^ resources = gcnew Dictionary<System::String^,List<XpsResource^>^>();
// Collections of images and fonts used in the current page.
List<XpsResource^>^ xpsImages = gcnew List<XpsResource^>();
List<XpsResource^>^ xpsFonts = gcnew List<XpsResource^>();
try
{
XpsImage^ xpsImage;
XpsFont^ xpsFont;
// Add, Write, and Commit image1 to the current page.
xpsImage = fixedPageWriter->AddImage(XpsImageType::JpegImageType);
WriteToStream(xpsImage->GetStream(), image1);
xpsImage->Commit();
xpsImages->Add(xpsImage); // Add image1 as a required resource.
// Add, Write, and Commit font 1 to the current page.
xpsFont = fixedPageWriter->AddFont();
WriteObfuscatedStream(xpsFont->Uri->ToString(), xpsFont->GetStream(), font1);
xpsFont->Commit();
xpsFonts->Add(xpsFont); // Add font1 as a required resource.
// Add, Write, and Commit image2 to the current page.
xpsImage = fixedPageWriter->AddImage(XpsImageType::TiffImageType);
WriteToStream(xpsImage->GetStream(), image2);
xpsImage->Commit();
xpsImages->Add(xpsImage); // Add image2 as a required resource.
// Add, Write, and Commit font2 to the current page.
xpsFont = fixedPageWriter->AddFont(false);
WriteToStream(xpsFont->GetStream(), font2);
xpsFont->Commit();
xpsFonts->Add(xpsFont); // Add font2 as a required resource.
// Return the image and font resources in a combined collection.
resources->Add("XpsImage", xpsImages);
resources->Add("XpsFont", xpsFonts);
return resources;
} catch (XpsPackagingException^ xpsException)
{
throw xpsException;
}
};// end:AddPageResources()
// -------------------------- AddPageResources ----------------------------
private Dictionary<string, List<XpsResource>>
AddPageResources(IXpsFixedPageWriter fixedPageWriter)
{
// Collection of all resources for this page.
// Key: "XpsImage", "XpsFont"
// Value: List of XpsImage or XpsFont
Dictionary<string, List<XpsResource>> resources =
new Dictionary<string, List<XpsResource>>();
// Collections of images and fonts used in the current page.
List<XpsResource> xpsImages = new List<XpsResource>();
List<XpsResource> xpsFonts = new List<XpsResource>();
try
{
XpsImage xpsImage;
XpsFont xpsFont;
// Add, Write, and Commit image1 to the current page.
xpsImage = fixedPageWriter.AddImage(XpsImageType.JpegImageType);
WriteToStream(xpsImage.GetStream(), image1);
xpsImage.Commit();
xpsImages.Add(xpsImage); // Add image1 as a required resource.
// Add, Write, and Commit font 1 to the current page.
xpsFont = fixedPageWriter.AddFont();
WriteObfuscatedStream(
xpsFont.Uri.ToString(), xpsFont.GetStream(), font1);
xpsFont.Commit();
xpsFonts.Add(xpsFont); // Add font1 as a required resource.
// Add, Write, and Commit image2 to the current page.
xpsImage = fixedPageWriter.AddImage(XpsImageType.TiffImageType);
WriteToStream(xpsImage.GetStream(), image2);
xpsImage.Commit();
xpsImages.Add(xpsImage); // Add image2 as a required resource.
// Add, Write, and Commit font2 to the current page.
xpsFont = fixedPageWriter.AddFont(false);
WriteToStream(xpsFont.GetStream(), font2);
xpsFont.Commit();
xpsFonts.Add(xpsFont); // Add font2 as a required resource.
// Return the image and font resources in a combined collection.
resources.Add("XpsImage", xpsImages);
resources.Add("XpsFont", xpsFonts);
return resources;
}
catch (XpsPackagingException xpsException)
{
throw xpsException;
}
}// end:AddPageResources()
' -------------------------- AddPageResources ----------------------------
Private Function AddPageResources(ByVal fixedPageWriter As IXpsFixedPageWriter) As Dictionary(Of String, List(Of XpsResource))
' Collection of all resources for this page.
' Key: "XpsImage", "XpsFont"
' Value: List of XpsImage or XpsFont
Dim resources As New Dictionary(Of String, List(Of XpsResource))()
' Collections of images and fonts used in the current page.
Dim xpsImages As New List(Of XpsResource)()
Dim xpsFonts As New List(Of XpsResource)()
Try
Dim xpsImage As XpsImage
Dim xpsFont As XpsFont
' Add, Write, and Commit image1 to the current page.
xpsImage = fixedPageWriter.AddImage(XpsImageType.JpegImageType)
WriteToStream(xpsImage.GetStream(), image1)
xpsImage.Commit()
xpsImages.Add(xpsImage) ' Add image1 as a required resource.
' Add, Write, and Commit font 1 to the current page.
xpsFont = fixedPageWriter.AddFont()
WriteObfuscatedStream(xpsFont.Uri.ToString(), xpsFont.GetStream(), font1)
xpsFont.Commit()
xpsFonts.Add(xpsFont) ' Add font1 as a required resource.
' Add, Write, and Commit image2 to the current page.
xpsImage = fixedPageWriter.AddImage(XpsImageType.TiffImageType)
WriteToStream(xpsImage.GetStream(), image2)
xpsImage.Commit()
xpsImages.Add(xpsImage) ' Add image2 as a required resource.
' Add, Write, and Commit font2 to the current page.
xpsFont = fixedPageWriter.AddFont(False)
WriteToStream(xpsFont.GetStream(), font2)
xpsFont.Commit()
xpsFonts.Add(xpsFont) ' Add font2 as a required resource.
' Return the image and font resources in a combined collection.
resources.Add("XpsImage", xpsImages)
resources.Add("XpsFont", xpsFonts)
Return resources
Catch xpsException As XpsPackagingException
Throw xpsException
End Try
End Function ' end:AddPageResources()
Applies to
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